The value of sustaining a Porsche car or any high-performance are different depending on the condition, age, and specific vehicle model. Because of the expansive and quality passed parts, Porsche will take slightly more part of your pocket money or salary for the maintenance.
If you don’t want to face a serious problem in the future in your Porsche car, then you should maintain it properly.
The maintenance Porsche car is the same as any other smart car, oil and oil filter, spark plug, belt, etc. Service intervals are similar to any other cars.